The JPG drawing
Wheel of Confusion
comes
From: Giggles & Grins
At: igiggle@aol.com on 1/25/2006
Source: http://www.skytopia.com/project/illusion/illusion.html
Wheel of Confusion
Which way is the wheel turning!?
Focus on the red dots and follow them round... it appears to be rotating anti-clockwise. However, if you follow the yellow dots round instead, the whole wheel will be turning the other way! - clockwise!